Ansible: adding hosts to /etc/hosts from inventory file

addhosts.yml

name: host mapping /etc/hosts of server
  hosts: <hostgroup>
  become: true
  tasks:
  - name: adding hostname mapping /etc/hosts
    lineinfile:
      dest: /etc/hosts
      insertbefore: '^127.0.0.1'
      line: '{{ item.0 }} {{ item.1 }}'
    with_together:
      - "{{ groups['hostname'] | map('extract', hostvars, ['ansible_default_ipv4', 'address'])| list }}"
      - "{{ groups['hostname'] | map('extract', hostvars, ['ansible_nodename']) | list }}"